Depurator



UNITED STATES PATENT OFFICE W. EVERETT SMITH, OF FRAMINGHAM,MASSACHUSETTS.

DEPURATOR.

SPECIFICATION forming part 01 Letters Patent No. 375.015, dated December20, 1887.

(No model.)

T0 aZZ w7wm it may concern- Be it known that 1, W. EVERETT SMITH, ofFramingham,in the county ofMiddlesex,State of Massachusetts, haveinvented a certain new and useful Improvementin Apparatus forAdministering Medicated Vapors by Inhalation,

'of which the following is a description suffiportion ofthe bodyremoved; and Fig. 3, a

diagram showing a portion of the inhaling apparatus enlarged.

Like letters ofreference indicate corresponding parts in the differentfigures of the drawmgs.

My invention relates to that class of apparatus for administeringmedieated vapors by inhalation in which the patient is placed in anexhausted or partially-exhausted receiver or cabinet; and it consists incertain novel details of construction, as hereinafter more fully setforth and claixned, by which a more effective and otherwise desirabledevice of this chamoter is produced than is now in ordinary use.

The nature and operation of the improvement Will be readily understoodby all conversant with such matters from the following explanation.

In the drawings, A represents the body, and B the door, of the cabinet.The body is of sufficient size and suitable form to contain the fastenit, by means of the crank-plate f and handle 2, With which thcir innerends are connected. The crank-plate is also connected with a handle, t,on the inner side of the door in such a manner as to enable a patientwithin the cabinet t0 readily open the door when disp0scd. The door isprovided arouud its edges with rubber or other suitable packing, 7', t0

render it substantiall y air-tight.

Disposed in the front wall of the body A there is a pane of glass, b,through which the patient may be seen when seated in the chair C, andpassing through the center of said pane are two metallic or hard-rubbertubes, D E, said tubes beiug provided where they pass through the paneWith a suitable packing, H, 130 render thjoint air-tight.

A mouth-pece,.J, preferably composed of glass, and having twolaterally-projecting nipples, d l, is connected with the tubes D E bytwo flexible rubber pipes, K L, the pipe K connecting the nipple 01 andthe tube D, and the pipe L connecting the nipplel and tube E. The bodyof the mouth-piece is enlarged to form the chambcr 9, and provided witha mouth-piece proper, 7L, and downwardly-projecting nipple 72, to whichis attached the hollow bulb M, said bulb serving the double purpose ofahandle for manipulating the mouthpiece and a receptacle for thecondensed spray or vapor from the ehamber g. The bulb is detachable toenable it to be emptied when necessary. The outer end of the tube D ispreferably provided with a flaring or trum pet-shaped mouth-piece, q. Itis also provided with a stop-000k, N, and the pipe L with a stop-cock,O.

Attached to the outer end of the tube E there is a flexible pipe, I,which conneets said tube With an ordinary Semple atomizer,R, saidatomizer being also connected with an ordinary air-condenser, Q, by etflexible pipe, T, the coupling of which is provided witha stopcock, y.

An ordinary airpump, G, is connected with the body A ot' the cabinet, bymeans of which the air in said body may be pumped ont or exhausted. Atube passes through one of the side walls of the body A, said tube beingprovided at its inner end with a stop-cock, 1;, which may be readilyopened by the patient in the chair 0 t0 admit air into the cabinet. Atube also passes through the front wall of the body A, said tube beingprovided at its enter end with a stop-000k, 10, which may be opened bythe physician or a person in attendanee on the outer side of the cabinett0 admit air to the interior of its body if desired.

In theuse of my improvement, the condenser Q being first charged orfilied with compressed air, and the stop-000k y closed, and the atomizerB filled with medicated iiqnid, the patient takes his scat in the chair0 and the door B is ciosed and fastened. The stop-cocks 0 N are thenclosed and the air in the body A ex hausted or partially exhansted bymeans of the air-pnmp G, after which the. patient i11- serts themonth-piece proper, 71, in his month and opens the stop-cock, 0. Thephysieian r person in attendance thon opens the stopcocks N 3 and thepatient inhaies nntii his longs are fnlly inflated. \Vhen bis iungs areinfiated, the patient closes the stop-cock 0 and exhales the vitiatedair throngh the pipe K and tube D, the elosed stop-cock O preventing theair as it is forcibiy exhaied from the longs from passing into theatomizer throngh the pipe L and tube E. Aftcr the air is exhaled, asdescribed, the stop-cool; 0 is again opened and the inhalation rpeated.

The medicated vapor from the atomizer as it enters the month-pieeeimpinges against the wails of the chamber g, thereby eansing a portionof the vapor to be condensed or the surplus 1iquid to be precipitatedand to pass into the bulb M, the vapor whieh thereafter passes thronghthe mouth-pieee IL being comparativeiy desiceated or dry.

lt will be obvious that the pipe K and tube D not oniy enable thevitiated air from the 1ungs of the patient to be exhaled withont passingthrongh the atomizer, but that it also snbserves to admit a quantity ofpure air, which is mixed with the medieaued vapor in the chamber g, ateaeh inspiration of the patient, thereby preventing the sense ofstrangulation which wonld be prodnced by inhaiing a heavily-chargedvapor nnmixed with an independent current of nnmedioated air.

in the temporary absence of the physician or attendant the patient mayopen the door by*means of the handie t, and in case faintness snperveneshe may let air into the cabinet throngh the stop-cock v. VVhen more airis needed in the cabinet at any period dnring the administration of thevapor, the physician or attendant 1nay open the stopcock 10.

It Wili be obvions that when the stopcock 1 is opcned the air from thecondenser Q will pass into the atomizer R and vaporize the medieatedliqnid contained therein, the medicated vapor thus produeed beingconstantiy blown through the pipe P, tube E, and pipe L into themonth-piece J untii said stop-cool: is elosed.

I do not confine myseIf to the use of any speeial form of air-condenser,air-pump, or atomizer, as any devices adapted to snitably perform thefonctions of these respective parts of the apparatns may be empioyed.

Having thns explained my invention, what I daim is- 1. In an apparatnsfor inhaling and exhaling n1edicated vapors and atmospheric air,

either separateiy or in a mixed condition, a monthpiece having a chamberin which the vapor and air are mixed on their passage, in combinationwith a pipe for condncting vapor to said chamber, a pipe for condnotingair to and from said ohamber, and a stop-coek for eiosing said airpipe,said month-piece being provided with an opening throngh which the mixedair and vapor may pass from said chamber into the month of the patient,an opening throgh which air may enter said ehamber fron1 said air-pipe,and anopening through which vapor may enter said chamber frorn saidvapor-pipe, snbstantially as described.

2. In an apparatus for inhaiing and exhaling medicated vapors andatmospheric air, either separately or in a mixed condition, an air-tightcabinet, a pnmp for exhansting air theretrom, and a month-pieoehaving achamber in which the vapor and air are mixed on their passage, incombination with a pipe for con ducting vapor to said eharnber, a pipefor condncting air to and from said charnber, and a stop-cool; forciosing said air-pipe, said mouth-

